package com.wusuowei.ucenter.exception;

import com.alibaba.fastjson.JSON;
import com.wusuowei.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.oauth2.provider.error.OAuth2AuthenticationEntryPoint;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author hjljy
 * Oauth2异常信息返回处理
 */
@Component
@Slf4j
public class CustomAuthenticationEntryPoint extends OAuth2AuthenticationEntryPoint {

    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException e) throws IOException, ServletException {
        log.error(e.getMessage());
        if(e instanceof BadCredentialsException){
            //如果是client_id和client_secret相关异常 返回自定义的数据格式
            response.setStatus(HttpStatus.OK.value());
            response.setHeader("Content-Type", "application/json;charset=UTF-8");
            response.getWriter().write(JSON.toJSONString(R.error("client_id或client_secret错误")));
        }else if(e instanceof InsufficientAuthenticationException){
            //如果是没有携带token
            response.setStatus(HttpStatus.UNAUTHORIZED.value());
            response.setHeader("Content-Type", "application/json;charset=UTF-8");
            response.getWriter().write(JSON.toJSONString(R.error("token校验不通过！")));
        }else {
            super.commence(request,response,e);
        }

    }
}
